Green Chalcedony 8mm Round - 15-16 Inch 3 Faceted Rondelle A natural blue form of

A natural blue form of calcium sulfate

have been used for yellowish gemstones for at least two thousand years

this gemstone in its polished state looks like what it would be like to capture smoke in a stone -- bottomless black mixed with white wisps

” It is chemically identical to Granite

The blue color

Green Chalcedony 8mm Round - 15-16 Inch 3 Faceted Rondelle A natural blue form ofBlue Chalcedony is a naturally occurring soft blue translucent stone. It is a member of the Quartz family, a form of silica with a cryptocrystalline structure that incorporates Moganite along with the Quartz. Known in antiquity as the Speakers Stone, it is believed to have been worn Cicero, the great Roman orator.